Back to the main page Back to category Stage Lighting Dimmers

musical instrument details

Lightronics 12 Channel Lighting Dimmer RM-121 DMX-512 Remote Control

Estimated price for orientation: 499 $

Category: Stage Lighting Dimmers
Class:











Description
Condition: Used: An item that has been used previously. The item may have some signs of cosmetic wear, but is fully operational and functions as intended. This item may be a floor model or store return that has been used. See the seller’s listing for full details and description of any imperfections. See all condition definitions- opens in a new window or tab ... Read moreabout the condition Brand: Lightronics
Rack Mountable: Yes Model: RM-121
Number of Channels: 12 MPN: RM-121


Unit Description and FunctionsThe RM-121 is a 14,400 Watt, 12 channel, rack mountable lighting dimmer. Each of the channels has a capacity of1200 Watts. It is controlled via low voltage signals which may be 3 wire multiplex, USITT DMX512, or AMX192.The unit is fan cooled. Channels may be independently assigned from the unit. The unit is overtemperature andovervoltage protected and has a magnetic circuit breaker for each channel. Standard connections for channeloutputs are via terminal strip.PlacementThe RM-121 is designed to be mounted in a standard 19" equipment rack using the four mounting holes in the faceplate of the dimmer. If the dimming system will be used for touring shows, it is recommended that you provideadditional support for the rear of the unit. The dimmer is fan cooled and requires no space between units whenmultiple dimmers are used. Air enters the dimmer through slots on the side and exits through holes in the bottom ofthe face plate. Make certain these ventilation holes are not obstructed. Do not place the RM-121 where it will beexposed to moisture or excessive heat.Power RequirementsEach RM-121 requires SINGLE PHASE 240 VOLT AC or TWO PHASES OF A THREE PHASE 208 VOLT ACservice. The neutral conductor is shared by two hots so it is important that the two hots used are of different phases.EACH PHASE must be capable of providing 60 AMPS. Line frequency is typically 60HZ. A 50HZ model is availablefor export, refer to the electrical rating markings on the dimmer to determine the operating frequency. One or moreRM-121 dimmers are to be installed into a standard 19" equipment rack with provisions for connection to anappropriate electrical service in accordance with the National Electrical Code, ANSI/NFPA 10-1993.Power enters the RM-121 through a bracket located at the rear of the unit. Remove the bracket and install anappropriate clamp. Behind the bracket is a terminal block with three lugs. The top and bottom connections labeled"H1" and "H2" are the line or "hots". The center connection labeled "N" is the neutral. There is an additional luglabeled "G" located to the left of the terminal block. This connection is for connecting the unit to earth ground.